Energetic and angular distributions of products of nuclear fusion reactions involving two colliding nuclei and two resulting particles are important in neutron spectrometry, as well as in studies of the behaviour of fast electrically charged particles in plasma, such as protons, tritons, helions and α-particles in the megaelectronvolt range. The other subjects are primordial nucleosynthesis and astrophysics since reaction rates in cosmic plasma can also be affected by suprathermal particles. The possibility of a reduction of the S-algorithm to a triple integral is demonstrated for the case of isotropic velocity distributions of projectile and target particles.

中文翻译：

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将核聚变产物能谱的各向同性 S 公式简化为三重积分

涉及两个碰撞核和两个产生的粒子的核聚变反应产物的能量和角度分布在中子光谱法以及等离子体中快速带电粒子（如质子、氚子、赫利昂和 α-）行为的研究中很重要。兆电子伏特范围内的粒子。其他科目是原始核合成和天体物理学，因为宇宙等离子体中的反应速率也会受到超热粒子的影响。对于射弹和目标粒子的各向同性速度分布的情况，证明了将 S 算法简化为三重积分的可能性。